一种通用的雷达海杂波计算机仿真模型  

A GENERAL COMPUTER SIMULATION MODEL FOR RADAR SEA CLUTTER

作　　者：胡居荣[1] 曹宁[1] 鹿浩[1] 

机构地区：[1]河海大学电子信息工程系,江苏南京210098

出　　处：《计算机应用与软件》2009年第7期175-177,189,共4页Computer Applications and Software

摘　　要：针对雷达海杂波相干视频散射模型,给出了一种通用的计算机仿真模型。提出用迭代算法和随机向量法完成无记忆非线性变换过程,产生非高斯相干随机序列。其中迭代算法用来计算非线性变换过程中高斯序列相关性的变化,而随机向量法用来完成线性变换,仿真实验数据证明利用这种方法可精确地产生具有指定概率密度和功率谱的非高斯随机序列,逼真地复现既包含振幅又包含相位的雷达海杂波相干视频散射信号。同时给出了迭代算法使用过程中的注意问题及海杂波模型仿真的过程和结果。A general computer model is presented for simulating the coherent video echo scattering model of radar sea clutter. Iteration algorithm and random vectors method are proposed to fulfil the transforming process of zero-memory nonlinearities and to generate non-Gaussian coherent random sequence. The iteration algorithm is developed to calculate the variation of Gaussian sequence pertinence in the process of nonlinearities transformation, and the random vectors method is developed to implement the linearity transformation. Simulation experiments＇ data show that by using this methods it can precisely generate non-Gaussian correlate random sequence with specified probability density_and power spectrum, and reproduce verisimilarly the scatter coherent video signal of radar sea clutter containing both amplitude and phase. The key points in using process of the iteration algorithm and the simulation process and outcome of sea clutter model are also given in the paper simul- taneously.

关 键 词：雷达海杂波 散射模型 非高斯随机序列 无记忆非线性变换 随机向量法 

分 类 号：O211.6[理学—概率论与数理统计] U260.13[理学—数学]